(define-g-enum "GdkVisibilityState" gdk-visibility-state
  (:export t
   :type-initializer "gdk_visibility_state_get_type")
  (:unobscured 0)
  (:partial 1)
  (:fully-obscured 2))  

:unobscured

The window is completely visible.

:partial

The window is partially visible.

:fully-obscured

The window is not visible at all.